Support for Linn digital streamers from dealer network on used equipment

I've been looking to purchase a new media streamer that can connect with a NAS server and stream digital content to my system. I've looked at various products, including Aurender, Naim and Linn, to name just a few. I'm very new to the move towards digital content on networks / servers, and away from CDs, although I've been streaming content from iTunes for a few years now in lower resolution format. I was interested in acquiring Linn Klimax or Akurate DSM units listed here on AGON, but when I spoke with two different NYC area Linn dealers, both told me that they do not support (for a fee) any Linn product acquired used. Hence, the question that I have: since Linn provides little information on configuration or integration to NAS servers for their media streaming products, choosing instead to rely on their specialist dealers to do this, how can there be a market for used Linn products which require such expertise, if Linn dealers decide to not support this, even on a paid basis? I called the U.S. distributor for Linn after getting a response back from them via Linn's web site, and after giving me the name of one of the two dealers who told me they do not support products not acquired new from them (which might also include original owners who relocate into their market), and they have yet to return my calls. Does anyone understand this service model, and just wondering how Linn would expect the resale values of their products to hold up if every one of their dealers refuses to provide support for those who've acquired Linn products via resale channels such as AGON?